CN112357080A

CN112357080A - Scalable horn and scalable unmanned aerial vehicle of horn

Info

Publication number: CN112357080A
Application number: CN202011382510.1A
Authority: CN
Inventors: 龚帮民; 艾剑良; 张立; 邢振林
Original assignee: Fudan University
Current assignee: Fudan University
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-02-12

Abstract

The invention discloses a telescopic horn and a horn-telescopic unmanned aerial vehicle, belonging to the field of unmanned aerial vehicles, wherein the telescopic horn comprises a large horn and a small horn, the large horn is of a hollow structure, and the side wall of the root part and the side wall of the tip part of the large horn are both provided with at least one limiting hole; the root of the small horn is slidably inserted in the large horn; the root of the small horn is fixed with a spring plate, the other end of the spring plate is fixed with a limiting bulge, and the spring plate provides elastic force for embedding the limiting bulge into the limiting hole so as to limit the position of the small horn; the side wall of the small machine arm is movably sleeved with a fastening sleeve, and the inner side wall of the fastening sleeve is configured to be sleeved on the tip side wall of the large machine arm, so that the tip of the large machine arm is contracted to fix the small machine arm. Wherein scalable unmanned aerial vehicle of horn is including foretell scalable horn. The telescopic aircraft has reasonable structural design, and the use of the elastic sheet, the limiting hole, the limiting bulge and the fastening sleeve in a matching way enables the aircraft arm to be telescopic and locked, thereby meeting the use requirements of transportation, storage and narrow space flight.

Description

Scalable horn and scalable unmanned aerial vehicle of horn

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to a telescopic arm and an unmanned aerial vehicle with the telescopic arm.

Background

An unmanned aircraft, abbreviated as "drone", and abbreviated in english as "UAV", is an unmanned aircraft that is operated by a radio remote control device and a self-contained program control device, or is operated autonomously, either completely or intermittently, by an onboard computer. Compared to manned aircraft, drones are more suited to dangerous and "foolproof" tasks. Unmanned aerial vehicles can be classified into military and civil applications according to the application field. For military use, unmanned aerial vehicles divide into reconnaissance aircraft and target drone. In civil aspects, the combination of unmanned aerial vehicles and industrial application is the real demand of unmanned aerial vehicles, and the application in the fields of aerial photography, agriculture, plant protection, miniature self-timer, surveying and mapping, news reporting, electric power inspection and the like is realized at present, so that the application of the unmanned aerial vehicles is greatly expanded, and the industrial application and the unmanned aerial vehicle technology are actively expanded in developed countries.

However, in some special mission processes, such as fields of express transportation, disaster relief, military reconnaissance and the like, due to the particularity of the environment, the unmanned aerial vehicle faces the challenge of passing through narrow terrain in the flight process, and the above tasks have higher requirements on functions of endurance, load capacity, stability and the like of the unmanned aerial vehicle, so that it is infeasible to improve the flexibility of the mission of the unmanned aerial vehicle by continuously reducing the volume of the unmanned aerial vehicle, and the design of large and medium unmanned aerial vehicles is a mainstream trend in the future.

Disclosure of Invention

Aiming at the problem that the unmanned aerial vehicle in the prior art cannot improve task flexibility by reducing the size, the invention aims to provide a telescopic horn and a telescopic unmanned aerial vehicle with the telescopic horn.

In order to achieve the purpose, the technical scheme of the invention is as follows:

in one aspect, the present invention provides a telescopic boom comprising,

the large horn is of a hollow structure, the root of the large horn is used for connecting a machine body, and the side wall of the root and the side wall of the tip of the large horn are both provided with at least one limiting hole;

the root part of the small machine arm is inserted into the large machine arm and is connected with the large machine arm in a sliding manner;

the elastic sheet is fixed at the root of the small horn at one end, the other end of the elastic sheet is positioned outside the root of the small horn, a limiting bulge is fixed at the other end of the elastic sheet, and the elastic sheet provides elastic force for embedding the limiting bulge into the limiting hole to limit the position of the small horn; and

the fastening sleeve is movably sleeved on the side wall of the small horn, and the inner side wall of the fastening sleeve is configured to be sleeved on the tip side wall of the large horn, so that the tip of the large horn contracts to fix the small horn.

Preferably, the inner side wall of the fastening sleeve is conical.

Preferably, the inner side wall of the large horn is provided with an axially arranged slide rail, and the outer wall of the small horn is provided with a sliding groove or a sliding block matched with the slide rail.

Preferably, the elastic sheet is fixedly connected to the inner side wall of the root part of the small horn through a welding block.

Preferably, the number of the limiting holes is two, and the two limiting holes are symmetrically arranged at the root and the tip of the large horn.

On the other hand, the invention also provides the unmanned aerial vehicle with the telescopic machine arm, which comprises a machine body, a rack for supporting the machine body, a plurality of machine arms connected to the machine body, motors arranged on each machine arm and blades connected to each motor, wherein the machine arms are the telescopic machine arms.

Further, a rubber ring is arranged between the root of the large horn and the machine body.

Preferably, the frame includes four frame vaulting poles and two frame horizontal poles, the upper end of four frame vaulting poles is connected respectively the four corners of fuselage bottom surface, and per two the lower extreme of frame vaulting pole is fixed respectively through a adapter sleeve and is the same on the frame horizontal pole.

Preferably, the drone is a six-rotor drone.

By adopting the technical scheme, firstly, the small horn can slide in the large horn, so that the whole length of the horn can be adjusted by relative sliding between the large horn and the small horn; secondly, due to the arrangement of the limiting hole on the large horn, the elastic sheet connected with the small horn and the limiting bulge, the large horn and the small horn can be respectively positioned at the expansion position and the contraction position, so that the telescopic state is kept; then because the setting of adapter sleeve for the connection effect between big horn and the little horn can obtain effectual assurance, avoids spacing protruding and spacing connection failure between the hole. In conclusion, the telescopic arm and the telescopic unmanned aerial vehicle with the telescopic arm provided by the invention not only solve the problem that a medium-large unmanned aerial vehicle occupies a large space in the transportation and storage processes, but also can reduce the size of the unmanned aerial vehicle by shortening the length of the arm to meet the flight requirement under the condition of not reducing the performance of the unmanned aerial vehicle when a narrow-terrain flight task is executed, so that the purpose of reducing the volume of the unmanned aerial vehicle under the condition of ensuring that the structural performance of the unmanned aerial vehicle is not influenced is achieved.

Drawings

FIG. 1 is a schematic view of a telescopic boom according to the present invention;

fig. 2 is a schematic structural diagram of an unmanned aerial vehicle with a telescopic arm according to the present invention.

In the figure, 1-blade, 2-motor rotor, 3-motor stator, 4-small horn, 5-welding block, 6-fastening sleeve, 7-shrapnel, 8-slide rail, 9-big horn, 10-spacing hole, 11-rubber ring, 12-fuselage, 13-frame brace rod, 14-connecting sleeve, 15-frame cross bar and 100-spacing projection.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on structures shown in the drawings, and are only used for convenience in describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.

In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in light of the present general concepts, in connection with the specific context of the scheme.

Example one

A telescopic boom is provided which comprises a large boom 9 and a small boom 4 as shown in figure 1.

Wherein, big horn 9 is hollow structure, and the root of big horn 9 is used for connecting unmanned aerial vehicle's fuselage, and the root lateral wall and the tip lateral wall of big horn 9 all are provided with at least one spacing hole 10 to all spacing holes 10 are a distribution along the axis direction of big horn 9, and every spacing hole 10 all represents one and can fix a position the position point that carries out location and restriction to little horn 4.

The root of the small horn 4 is inserted into the hollow cavity of the large horn 9, and the small horn 4 is connected with the large horn 9 in a sliding way along the axial direction of the large horn 9. In this embodiment, the small arm 4 is also preferably of a hollow structure. And, the inner side wall of the big horn 9 is provided with a slide rail 8 which is arranged axially, correspondingly, the outer wall of the small horn 4 is provided with a sliding groove or a sliding block which is matched with the slide rail 8, such as a sliding groove.

The root fixedly connected with shell fragment 7 of forearm 4, this shell fragment 7 is the strip, and the one end of shell fragment 7 stretches into in the forearm 4 to through the fixed welding of a welding piece 5 on the root inside wall of forearm 4. The other end of the elastic sheet 7 is positioned at the outer side of the root part of the small horn 4, a limiting bulge 100 is fixed at the other end of the elastic sheet 7, the limiting bulge 100 is matched with a limiting hole 10, and the limiting bulge 100 can be embedded into the limiting hole 10 so that the position of the small horn 4 relative to the large horn 9 is limited and fixed; meanwhile, the elastic sheet 7 is used for providing elastic force for embedding the limiting protrusion 100 into the limiting hole 10, so that when the small horn 4 slides to a corresponding position of the root or the tip of the large horn 9, the limiting protrusion 100 is popped into the limiting hole 10 by the elastic sheet 7. During unlocking, the limiting protrusion 100 can be pressed down only by pressing the limiting protrusion 100 when the elastic force provided by the elastic sheet 7 is overcome, so that the small horn 4 can slide relative to the large horn 9 to realize the integral extension and retraction of the horn.

This embodiment still provides adapter sleeve 6, and the inside wall diameter of this adapter sleeve 6 is greater than the outer wall diameter of little horn 4 for this adapter sleeve 6 movably overlaps and establish on the lateral wall of little horn 4. And, make the inside wall of the adapter sleeve 6 configure as, when the adapter sleeve 6 is set up on the tip lateral wall of the big horn 9, the adapter sleeve 6 makes the tip of the big horn 9 shrink in order to fix the small horn 4, namely, it can be understood that, the inside wall diameter of the adapter sleeve 6 is smaller than the outer wall diameter of the big horn 9, thus when the adapter sleeve 6 is set up on the big horn 9, can force the big horn 9 to shrink, thus press from both sides the small horn 4 that socket joint is in the big horn 9 tightly, so can strengthen the connection effect between big horn 9 and the small horn 4, prevent the restriction and the location between spacing arch 100 and spacing hole 10 from failing.

In this embodiment, the inner side wall of the fastening sleeve 6 is tapered, the large end side thereof faces the large horn 9, and the diameter of the large end side is configured to exceed the diameter of the outer wall of the large horn 9. Or, the diameter of the inner side wall of the fastening sleeve 6 can be set to be slightly larger than the diameter of the outer wall of the large horn 9, for example, the diameter of the inner side wall of the fastening sleeve 6 and the diameter of the outer side wall of the large horn 9 are in interference fit, and a chamfer is arranged in the direction towards one side of the large horn 9, so that the fastening sleeve 6 can be conveniently sleeved on the large horn 9.

In this embodiment, the two limiting holes 10 are provided in the large arm 9, and the two limiting holes 10 are symmetrically provided in the root and tip of the large arm 9, so that the small arm 4 has only two positioning points in the large arm 9, that is, the arm has a state of being expanded to the maximum size and a state of being shortened to the minimum size as a whole. Of course, in other embodiments, the number of the limiting holes 10 is set and arranged to be three, four or even more, so that the whole machine arm has more adjustable length, thereby meeting the requirements of more use scenes.

Example two

An unmanned aerial vehicle with a telescopic boom is provided, as shown in fig. 2, including a fuselage 12, a frame for supporting the fuselage 12, a plurality of booms connected to the fuselage 12, a motor installed on each boom, and a blade 1 connected to each motor, where the boom is the telescopic boom disclosed in the first embodiment.

Wherein the horn configuration is six, and six horn settings are around fuselage 12 for this unmanned aerial vehicle is six rotor unmanned aerial vehicle. Wherein, the rubber ring 11 is arranged between the root of the big arm 9 and the fuselage 12, and the rubber ring 11 plays a role in fastening and sealing.

The motor comprises a motor stator 3 and a motor rotor 2, wherein the motor stator 3 is fixedly arranged at the tip of a small motor arm 4 in the motor arm, and the blade 1 is arranged at the end part of the motor rotor 2 extending out of the motor stator 3.

The rack comprises four rack support rods 13 and two rack cross rods 15, the rack support rods 13 are obliquely connected to the bottom surface of the machine body 12, and the upper ends of the four rack support rods 13 are connected to four corners of the bottom surface of the machine body 12 respectively. The number of the frame cross bars 15 is two, and the lower ends of every two frame struts 13 are respectively fixed on the same frame cross bar 15 through a connecting sleeve 14.

When the unmanned aerial vehicle with the telescopic horn provided by the embodiment is used for a transition flight test, the large horn 9 and the small horn 4 can extend and contract through the arrangement of the slide rail 8, the elastic sheet 7, the limiting hole 10 and the limiting protrusion 100, so that the size of the unmanned aerial vehicle is greatly reduced, and the problems of more horns, more blades, larger body size and inconvenience in packaging and transportation of the existing medium-sized and large-sized unmanned aerial vehicle can be solved; and, can add the connection effect between strong horn 9 and the little horn 4 through adapter sleeve 6, can reach the purpose of guaranteeing to realize the reduction of unmanned aerial vehicle volume under the not influenced condition of each side of unmanned aerial vehicle structural performance.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. A telescopic boom, characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

2. The boom of claim 1, wherein: the inside wall of adapter sleeve is the toper.

3. The boom of claim 1, wherein: the inner side wall of the large horn is provided with axially arranged slide rails, and the outer wall of the small horn is provided with a sliding groove or a sliding block matched with the slide rails.

4. The boom of claim 1, wherein: the elastic sheet is fixedly connected to the inner side wall of the root part of the small horn through a welding block.

5. The boom of claim 1, wherein: the two limiting holes are symmetrically formed in the root and the tip of the large horn.

6. The utility model provides a scalable unmanned aerial vehicle of horn, includes the fuselage, is used for supporting frame, the connection of fuselage a plurality of horns on the fuselage, install every motor and connection on the horn are at every paddle on the motor, its characterized in that: the boom is a telescopic boom as claimed in any of claims 1-5.

7. The telescopic unmanned aerial vehicle of claim 6, wherein: and a rubber ring is arranged between the root of the large horn and the machine body.

8. The telescopic unmanned aerial vehicle of claim 6, wherein: the machine frame comprises four machine frame support rods and two machine frame cross rods, the upper ends of the four machine frame support rods are connected to four corners of the bottom surface of the machine body respectively, and every two lower ends of the machine frame support rods are fixed to the same machine frame cross rods through connecting sleeves respectively.

9. The telescopic unmanned aerial vehicle of claim 6, wherein: the unmanned aerial vehicle is a six-rotor unmanned aerial vehicle.